The Iraq war veteran accused of murdering five people at the Fort Lauderdale International Airport earlier this month stood hunched over a courtroom lectern Monday morning before entering an initial plea of not guilty to 22 federal counts.

The man suspected of fatally shooting five people and wounding six others at a Florida airport was ordered held without bond until his trial at a hearing Tuesday that also revealed some new details about the investigation.

The Iraq War veteran accused of killing five people at the Fort Lauderdale-Hollywood International Airport on Friday had undergone a mental health evaluation two months ago after telling an FBI office in Alaska that his mind was being controlled by a U.S. intelligence agency, the FBI said.